6k dry for half tons. That truck has plenty of power, but GVRW and rear axle ratings will be over at 7k+ pounds. Also, those that have towed with half tons at 7k dry (8-9k loaded) tend to comment on stability and comfort level of towing at highway speeds.
If you want a 7-9k dry TT, get a 3/4 ton. Any 2011+ will do. If you find something in the 6k dry range, then I recommend the 2017+ F-150 with 10spd trans.